使用 GitHub Actions 推送前进行测试

在某些情况下，您可能希望在推送图像之前验证图像是否按预期工作。以下工作流程实现了几个步骤来实现此目的：

  1. 构建镜像并将其导出到 Docker
  2. 测试你的形象
  3. 多平台构建和推送镜像
name: ci

on:
  push:
    branches:
      - "main"

env:
  TEST_TAG: user/app:test
  LATEST_TAG: user/app:latest

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and export to Docker
        uses: docker/build-push-action@v5
        with:
          context: .
          load: true
          tags: ${{ env.TEST_TAG }}
      - name: Test
        run: |
          docker run --rm ${{ env.TEST_TAG }}          
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ env.LATEST_TAG }}

笔记

在此工作流程中，图像linux/amd64仅构建一次。图像构建一次，以下步骤使用第一步中的内部缓存 Build and push。第二步Build and push仅构建 linux/arm64.